Just rewatched Tron tonight. Even back when it was first released, the utter computer illiteracy of the screenwriter bugged the hell out of me. We're not talking about plot holes so much as it being nothing more than a mediocre story with some computer terms overlaid on it by someone who didn't understand computers. Without the computer terminology and splashy effects, it could easily have been dismissed as your typical sci-fi B-movie, like Galaxy of Terror or Glen Larson's Buck Rogers. It made about as much sense.
Still, I watch it again every once in awhile, as just dumb fun. Too bad I can't say that about Tron: Legacy, which wasn't fun at all. Never going to watch that movie again.